Signal device



Dec. 23, 1924. 1,520,394

C. E. BEACH SIGNAL DEVICE Filed Dec. '7, 1920 6 Sheets-Sheet 2 INVENTOI? 1,520,394 C. E. BEACH SIGNAL DEVICE Filed Dec. 7 1920. s Sheets-Shed s INVL'NTOR beg 23. 1924. 1,520,394

C. E. BEACH mm names Filed Dec. '7. 1920 6 Sheets-Sheet 4 nvvavron @(EMQ Dec. 1924- I 1,520,394

0. E. BEACH SIGNAL DEVICE Filed Dec. 7, 1920 6 Sheets-Sheet 6 fie I4 INVENTOR- Patented Dec. 23, 1924.

CLARENCE E. BEACH, OF BINGHAMTON, NEW YORK.

SIGNAL DEVICE.

Application filed December 7, 1920. Serial No. 428,970.

To all whom it may concern:

Be it known that I, CLARENCE E. BEACH, a citizen of the United States, residing at Binghamton, county of Broome, and State of New York, have invented certain new and useful Improvements in Signal Devices, of which the following is a specification.

This invention relates to signal transmit ting devices having releasing mechanism variably operable to cause the transmission of signals of one or more cycles or rounds, certain characteristics of some of such rounds being varied in a predetermined manner in other of such rounds.

The transmitting device of this invention is particularly adapted for use in signal systems such as, for example, automatic lire alarm systems in which distinctive warning signals should be given in response to the development of various conditions such as; (1) in the event of certain transient conditions (for example, abnormal circuit or temperature conditions of comparatively short duration), with facilities for repetitions, without any intervening manual attention, upon each recurrence of such transient conditions; (2) in the event of certain continuing conditions (for example, a broken line or a run-down motor-spring) for which, in the absence of intervening manual restoration and after the transmission of the intended number of rounds, there should be no response to continuation, recurrence or repetition; or in the event of certain other continuing conditions (for example, the abnormal heat conditions incident to fire) to which a predetermined number 01 signal rounds should be transmitted even it the agency responsive to such conditions ceases to be efl ective to maintain the releasing mechanism in operated condition throughout all of such rounds, but should not transmit an excessive number of rounds, even if such agency is continuously or repeatedly conditioned to cause said releasing mechanism to assume its operated position after intended rounds have been transmitted.

Transmitting devices employed in such systems usually comprise trains which are arranged to be set in action by means of magnetically operated releasing mechanism, and such trains have automatic controlling means moved by the running thereof and rendered effective by the co-operation of such magnetic releasing mechanism to stop the train after the conclusion of a predetermined extent of continuous operation thereof. In prior devices such co-operation of the magnetic releasing mechanism has served to substantially increase the frictional load and has necessitated the employment of increased retractile stress opposing the magnetic pull, thus necessitating the use of a magnetic pull greatly in excess of that which would be necessary to control the running of the train, were it not for the co-operation of the releasing mechanism with the controlling means.

F or reasons well understood by those skilled in this art, it is desirable to minimize, to the utmost extent compatible with mechanical stability during periods of magnetic de-energization, both the frictional load and the retractile stress opposing the magnetic pull.

Prio-r transmitting trains employed for giving distinctive Warnings in response to various conditions, as hereinbeiore pointed out, have either been employed in duplicate or else have been equipped with double magnetic controlling structures applied to a single train. In either event such duplication increases the cost of manufacture and maintenance, besides providing objectionable complication; and, when double magnetic controlling structure is applied to a single train, the limited available space prevents the employment of as effective magnetic structure as could be provided it the same space was occupied by a unitary magnet structure.

An object of this invention is to provide an improved signal transmitting mechanism comprising a signaling train and a unitary magnetic structure variably operable for effecting the transmission of distinctive signals.

Another ob ect is to provide improved controlling means for the train of a signaling device, which means will be moved by the running of such train and rendered effective by the co-operation of a part operable by an extraneous force and adapted to assume any of two or more positions during the running of such train, whereby such cooperation will not impede movement of such part to start said train when at rest, or when said train is at a stage of its operation at or immediately following which said pprt might act to arrest the running there- 0 Other objects are to provide signaling dell ll vices which :are .more positive in action, which are less difficult and expensive to manufacture and keep in proper runningorder, and which are more readily convertible I 5 for the accomplishment of various differing functions for the attainment of which different types of similar devices have heretofore been employed. Still other objects will be in part obvious and in part specifically pointed out in the following specification. I

In applylng this invention to a signaling train having .a starting and stopping mechanism the effectiveness of which is governed by controlling means moved by the train in running; if it is desirable that the signaling train shall have a recurrent'cycle of action, and that, when such train 'has entered upon any such cycle of action, its action shall pro-- ceed uninterruptedly until the completion thereof; a holder is provided for preventing action of the starting and stopping mechanism to stop the train duringany such cycle. For example, when such a signaling train is employed for the operation of code signal transmitting means, such holder is arranged to render the starting and stopping mechanismineifective to stop the train-during the stages of operation thereof when interruption of a round or cycle of such code signal would result from such stoppage. For want of a better distinguishing designation, such holder will be hereinafter .referred to as a guide for rendering the starting and stopping means inefiectiveto'stop the train durin certain stages of the operation thereof or words to that effect; but it should be distinctly understood that such use of the word guide is not intended to describe any spe- 40 cific form of such holder as the details of ,the construction of this feature form no part of this invention.

When it "is desired 'to employ a signaling train, such as just described, for the formulation of codesignals, suitable formulating mechanism (such as a code wheel and circuit controlling contacts) is so arranged with relation to such train that the formulation of the desired code signal will be accom plished a greater or less number of times, as determined by the starting and stopping mechanism of such train after each formulating cycle thereof.

The controlling means hereinbefore referred to is arranged to so govern the functions of the starting and stopping mechanism that, after predetermined action of said train, said mechanism will act to stop the running thereof regardless of the action of the actuating means or the force which is normally effective to operate the starting and stopping mechanism to permit said train to start, when at rest, or to continue running after the completion of any cycle of the operation thereof.

When signaling trains are employed in which the "starting and stopping mechanism is operable in response to changes in the excitation of an electroma-gnet incident to variations in the current flow in a circuit connected therewith, the current path through the windings of such electromagnet includes contacts so operable by the controlling means that said magnet will be rendered unresponsive to such variations after such predetermined action of said train.

When such a signaling train is arranged for operation in response to action of an extraneous force through one or another of two avenues, if a different number of operating cycles of such train should result from the action of such force through one ofsuch avenues than should result from the action of such force through the other of such avenues; the communication of such avenues with the actuating means for the starting and stopping mechanism is so governed by the controlling means that, after a predetermined one or more operating cycles of the train,'such starting and stopping mechanism will be rendered unresponsive to the action of such force through one of such avenues, and so that, after a predetermined additional one or more operating cycles of said train, said mechanism will be rendered unresponsive to the action of such force through the other of said avenues. Thus, if the starting and stopping mechanism is operable in response to an extraneous electrical force, acting through one oranother of two current paths or avenues to cause changes in the excitation of an electromagnet; contacts are included in such paths, and are so operable by 'the'control'ling means that, after a predetermined one or 1 more operating cycles of the train, "said magnet will be. renderedunresponsive to variations to the current flow in one of'said paths, and so that, after a predetermined r additional one or more operating cycles of said train, said magnet will be rendered unresponsive to variations in the current flow in the other of said paths. If the starting and stopping mechanism is operable in response to an extraneous mechanical force acting through one or the other of 'two mechanical agenc1es, or through movement of a single agency in either one direction or the other, latches or other disconnecting means are provided, such means being operable by the controlling means sov that, after a predetermined one or more operating cycles of the train, said mechanism will be rendered unresponsive to the movement of one of such agencies (or to the movement inone direction of such single agency, as the case may be) and so that after a predetermined additional one or more operating cycles of said train, said mechanism will be rendered unresponsive to 9 such other movement. Such an electromagnet, in the case of an electrical force, and a diaphragm or other structure responsive to such a mechanical force, constitute translating mechanism for operating the starting and stopping mechanism.

F or certain classes of service, it is desirable that, after the signaling train has acted through a predetermined number of the operating cycles thereof in response to the application of an extraneous force through a certain avenue to the translating mechanism of the starting and stopping mechanism thereof, that the action of such train should be continued through an additional predetermined one or more cycles thereof, regardless of the continuity of the action of such extraneous force through such avenue.

In adapting this invention to such classes of service, the controlling means is so arranged that, after movement thereof incident to running of the train for a predetermined number of the operating cycles thereof, the starting and stopping mechanism will be rendered ineffective to stop the running of said train until after the completion of the desired number of additional operating cycles thereof. For example, when a signaling train arranged in accordance with this invention has starting and stopping mechanism operable in response to changes in the excitation of an electromagnet incident to variations in the current flow in a circuit connected therewith, the current path through the winding of such an electromagnet includes contacts so operable by the controlling means, that, after a predetermined one or more operating cycles of the train, connections will be established which will assure such circuit relationship of said electromagnet as will prevent action of the starting and stopping mechanism to stop the running of the train until after said train has acted for an additional predetermined number of the operating cycles thereof. If the starting and stopping mechanism of such a train is operable in response to a mechanical force acting through one or more agencies, such relative arrangement of the starting and stopping mechanism and the controlling means is provided that, after a predetermined one or more operating cycles of the train, the starting and stopping mechanism Will be mechanically prevented, by the action of the controlling means, from acting to stop the running of the train, until such running has been continued for the desired additional operating cycles thereof.

From the foregoing it is apparent that such trains and the controlling means moved thereby, when provided With electromagnetically operable starting and stopping mechanism, provide electromagnetically controlled mechanism comprising means for rendering such starting and stopping mechanism responsive to various current paths after various predetermined operating cycles of such train.

Under certain operating conditions, transmitting means is required which will formulate two different signals, and which means will render the formulation of one of such signals effective only after the transmitting means has acted to formulate the other of such signals a predetermined one or more times. When it is desired to employ an embodiment of this invention which is suited to such operating conditions, suitable form ulating mechanism (such as two sets of formulating contacts independently operable by distinctively arranged code wheels; is suitable arranged with relation to a sig naling train constructed and arranged as hereinbefore described, to the end that the running of such train will cause such formulating mechanism to act to formulate the desired two different signals. In cases when one of such. signals should, when effectively formulated, serve as a prefix or a sufiir: for the other of such signals: such transmitting means is arranged for forumlating such signals successively and in alternation. The effectiveness of the formnlat ing means in formulating one or the other of such signals is governed by the controh ling mechanism which is moved by the train in running. F or example, when the formulating mechanism comprises two sets of in dependently operable formulating contacts; circuit controlling mechanism is prov for the current paths of such contacts, icn mechanism being operable by the tiainmoved controlling means to renoer one of the sets of said formulating contacts effective only after the signaling train has completed its cycle of operation a predetermined one or more times.

From the foregoing it is ap jiarent that, in the instance of electromagnetically con-- trolled signaling mechanism arranged in ac cordance with this invention and having two sets of code signaling contacts, the controlling means moved by the train in runing operates circuit controlling mechanism to variably govern the c' cuit relationships of formulating mechanism contacts and electromagnetically controlled mechanism.

Important features of this invention reside in the construction and arrangen'ient of the train-moved controlling means of signal ing trains, such as those hereinhefore referred to, whereby certain functions of such controlling means are accomplished after the associated train has acted without stopping for greater or lesser numbers of the forumlating cycles thereof, but such functions are not accon'iplished after such train has acted for like illlll'il'JBlS of the formulating cycles thereof with intervening stops.

iii;

l'lli adapted to junctions of I In accordance with one of such features, such controlling means comprises step by step accumulation mechanism intermittent- 1y engaged by the train in running for actuation thereof in one'direction; the movcment of said mechanism in such direction being hereinafter referred to as ae'cun'iulative. movement thereof.

Such accumulation mechanism comprises a member having teeth, together with means operable by the train in running for engaging such'teeth to impart accumulative move ment thereto; means being provided for'constantly imparting a tendency to move such toothed member in'the opposite direction so as to tend to cancel or restore any accumulative movement which has been imparted thereto. a

Such accumulation mechanism also comprises holding means which may, for eXample, consist of a'ratchet dog or holding pawl ride upon and engage the teeth .of the toothed member ing means adapted to prevent accumulationcanceling or restoringmovement thereof.

In accordance with a further feature of this invention, the junctions of the lifting and holding faces of the teeth of the member intermittently moved-by the train and of the holding pawltherefor are sorelatively formed that the outer'ends of the holding faces of such teeth will act as lifting faces for said. pawl. To thi's'end, the outerends of the holdingf'aces of such teeth may be beveled so as to act as lifting faces for the pawl during canceling or restoring movement of the toothed member, the junctions of the lifting and holding faces of the pawl may be correspondingly beveled-to like end, or both the points of such teeth and the said faces of the pawl may be so beveled. In any event, such parts are so relatively formed that the points *of the teeth of said member will serve to lift the holding face of the pawl a sutlicient distance out of the path of the holding faces of the teeth for a purpose which will be hereinafter more fully explained.

Atendency is constantly imparted'to the pawl or holder (as by gravity or spring pressure) to move said holder into the path of the teeth of the toothed member, so that said holder will be adapted to retain acmul'ative steps of said member during intermissions of the engagement of the'train actuated operating means therewith.

From the foregoing it is apparent that, during each accumulative step of thetoothed member, theholder or pawl is positioned to permit canceling or restoring movement of such member so that, while so positioned, such holder is ineffective to cause retention of accumulative movement previously imparted to said toothed member.

g g In accordance with still another feature of so as'to serve as a holdthis invention, a latch is provided'for retaining the holding pawl in its ineffective position i said latch ha ving 1 a tendency imparted thereto (as by gravity or spring force) to move to a position in which it will retain the holding-pawl in its ineffective orp'ermissive position. The relativeconstructionof said latch and the "holding pawl associated therewith issuch that, when said holder is effectively positioned with relation to the toothed member associated therewith, "said latch will beheld thereby out'o'f the-path of the movement of said holder, and so that when said holder is moved to its ineffective or permissive-positionduring any step-of the accumulative movement thereof, such move ment of said holder will cause itto permit said latch to ZtCt'llO retain such movement'of said holder, to the=cnd that said latch may serve'at certain times, for a purpose which will be hereinafter more fully described, to continue the in'eifectiveness of said holder bypreve'nting it from retainingprevious cumulation and thereby permitting the toothed member to be restored to its normal position.

The relative constructionbfthe toothed member andthe latch-is sucli that,'-when said member is inits fully restored position, said latch will be heldby saidmeniber out of the path of the'holder associated-therewith,and so that said latch will serve to stop said toothed memberin 'i'ts 'fully restored position, when said member lmS HIOVGKl tO cancel previous accumulative movement thereof.

The accumulation mechanism (whichc-om prises thetoothed member,-holder and latch just described), cooperates "with the starting and stopping mec anism *hereinbef'ore referred to, to the endthat the eifectivene's's of said accumulation mechanisnnas "to the retention of any successive accumulative movements imparted thereto by the sir-nuli'ng train, will be dependentnpon'the con tinuit-y' of the running "of the signaling train,

'afterthe conclusion of any operating cycle thereof, as determined'by the starting and stopping mechanisn'i associated therewith.

The cooperation between the acci'imul'ation,

mechanism and the starting and stopping mechanism, asgust referred to, is accomplishedby suitable construction and arrangement with relation to a member a forming part of the starting and stopping mechanism, which member occupies one or another of several positions, dependent upon such mechanism being conditioned for starting or stopping the train controlled thereby. Such member will hereinafter be referred to as a determining member. V

In detail, this feature of this invention is carried out by employing a determining member so formed that apart thereof will be disposed in the path of the'latch associ ated'therewith when said member is in'the position which it assumes when the starting and stopping mechanism is conditioned to cause or permit continued operation of the train governed thereby; and the relative construction of such determining member and latch, and of the toothed-member-holder associated therewith, is such that the retaining action of said latch will be prevented when the (lo-engaging part of such determining member is disposed in the path of said latch.

In applying this feature to signaling trains having a guide for the determining member, as hereinbefore more fully described, such determining member is adapted to cocupy any one of three principal positions, two of which permit running of the train and the other of which causes stopping there of. Suitable extraneous means are provided for moving such member to one of the said positions-to start or permit continued running of the train; means is provided constantly tending to move such member to the stopping position thereof; and the associated guide serves, during operating cycles of the signaling train, to arrest the stopping movement of such member intermediate the start ing and stopping positions thereof.

The arrangement of such determining member with relation to the latch associated therewith is such as to permit movement of said latch to the retaining position thereof only when said member is in its starting position.

In order to avoid impairing the responsiveness of such a determining member to the actuating forces provided therefor, the relative formation of the cooperating parts thereof is such that when the holding means is positioned to retain accumulative movement of the toothed member associated therewith, the latch will be held out of the path of the determining member; and so that when the holding member is ineifectively positioned, so as to permit restoring movement of the toothed member (and is therefore in position to be engaged by said latch for the purpose of being held in such ineffective position) said latch will be permitted to move into engagement with or into the path of said determining member.

Although the cooperative relation of an accumulation mechanism latch member and a starting-andstopping-mechanisin-determining member have been hereinbefore particularly described, it should be understood that this feature is also suited for use in signaling mechanism having a determining member which does not form part of start ing and stopping mechanism, but which governs the retention and the cancelation or restoration of accumulative movement of step by step accumulation mechanism; and that the use of alatch, holder and toothed accumulation member constructed and arranged in' accordance with this invention, is

particularly advantageous when the action or effectiveness of such a holder should be governed by a determining member operable by an agency of comparatively slight This invention will be more fully under stood by referring to the annexed drawings, throughout which like characters denote similar parts, and in which:

Figure 1 is a top or plan View of an elec tromagnetically controlled signaling device embodying the general and certain specific features of this invention;

Fig. 2 is a front elevation of the same;

Figs. 3 and 4 are, respectively, left-hand and right-hand end elevations of the same;

Fig. 5 is a front elevation of the interior mechanism of the device of Fig. 1: the front plate being removed, ends of shafts and similar parts being shown in cross section, and a portion of the main spring and the guide disc therefor being cut away to more clearly disclose the ratchet mechanism;

Figs. 6, 7, 8 and 9 are details to be referred to;

Fig. 10 is a diagrammatic representation of typical circuit connections provided for the code signaling contacts shown in Figs. 1, 2, 3, 4:, 12, 13 and 14;

Fig. 11 is an illustrative diagrammatic representation of typical circuit connections and controlling contacts for the actuating magnet of the device of Figs. 1 to 5 inclusive;

Fig. 12 is a front elevation of a singleacting diaphragm-controlled signaling de vice embodying the general and certain other specific features of this invention;

Fig. 13 is a front elevation of a doubleacting diaphragm-controlled signaling device embodying the general and certain further specific features of this invention;

Figs. 14 and 15 are, respectively, left-hand and righthand end elevations of portions of the device of Fig. 13. I

In the interest of clearness, parts fully shown on one or more views are omitted from other views, where if shown, they would so nearly obstruct or be obstructed by other parts as to render inclusion therein confusing.

The signaling device shown by Figs. 1 to 5 inclusive, comprises signaling train frame platesz31... and: 32', held: inrsuitableispaced; re-- lationbythe-frame posts 33, 34and; 315i and by the magnet supporting: brackets 3.6- and. 37.; 1and fo-rma-v support for 'theavario-us other parts of said device, as will be hereinafter morefully. explained. A

A suitable signaling-train is supported between the: plates 31. and: 32,. and: comprisesmechanism ass-follows; The mainsspring 38', one end: of which. is secured. to the post 33 andSthe other end" of which issecured tothe mai'neshaft. 39; the main gear. 40' is carried by the shaft 39,} and is driven .by said shaft: actingrthrough theratchet: wheel 41 and-dog; 42;. an intermediate: gear 43- carried by the shaft. 44: is. drivenv by the main-gear 40 act.- ing through the-.pinioin 45;. thecodewheel. shaft. 46- carries" the gear'47. and. is driven byztlie gear'43: acting'throu the -pinion 48 the-escapeswheel. 49 is carried by the, shaft: 50 and is driven. by the? gear. 47: acting through thepinion 51-;.the escapement: pallet-1 carried'zby the shaft 53 andeis' op erated; by the wheela49: The forwardzend of the main-shaft 39 projects-beyond the'front face of. the. plate 32; said end: being squared to facilitate engagement. thereof by a1 suitable: winding key... The. rear endi'of said shaft; 39: projects beyond the rear face" of the'p'late 31 and carries-thepinion 54 The spring: stop gear 55'. is carried by. the shaft 56 andengages.thepinion 54 a tooth 57' (see Fig. 5) being. so formedi as to arrest" the rotation; of said: pinion when; engagedthereby. Said: gear. 55 is so'set with relation to the pinion 54 as to prevent overwinding. ofthe main-spring 38. I

A..g112t1'da disc- 58'- is carried: by the main shaft: 39', for holding the: main-spring; 38-

away from-the ratchet: dog 42; The shaft 46 projects beyond the front face of the plate32, seas to be suited to carry a codewheel for desired engagement with such circuitfcontrolling; contacts as: may be. mounted upon. the front side of said." plate. The

pallet shaft 53 carries thereon a pendulum 59 or: other retarding mechanil'sm of any Well-known form, for suitably regulating: the. speed. of rotation of the-'code-wheel shaft 46. j

Starting and stoppingmechanism is provided for the signalingtrain just. described; said mechanism comprising a; determining lever 60, pivoted at'61 and-.havingprojed tions 62, 6-3 and: 64-; and. a detent; arm '66 is so. carried by the pallet shaft 53- as-tobe caused to travel backwards; and; forwards across the pathofv the projection. 62 during the actuation of said. pallet by the escapewheel 49. Holding means is provided: for the starting and. stopping mechanism, comprising the guide disc 65, which is-mounted. inthe path ofitheprojection. 6.4; Said disc is of "1 sueludi'ameter. that, whenthe projection. 64:

is; restingiontheaperipheriy. thereof; .thelever' 6.0 will be supported in. such position:- that the projection. 62 carried thereby will; he: above the path of the arm 66', butthearmazture 67-. will. be such distance from the-ends;

of the cores Off the magnet 68: as to permit further attractive movement thereof for a.-

reason which: will be hereinafter, more fullys explained. A. notch 69 is formed. in theperiphery of the disc for. receivingithe end. of the projection 64, .saidnotch; being ;of such depth-that, when the-end; of said: projection. 64 rests therein, the lever 60 will be in I such" position astobring the proj action: 62 intoithexpathof the arm 66-,- and-thereby; arrest the running ofthe-traim (lode signal. formulating mechanism is provided, which mechanism comprises the, code'wheel. 7.0 (seeFig. 2). carried by the shaft 46 of "the, signalingtrain, the trailing contact 71. operableby said Wheel, and. the contacts72. and 73 which-gcosengage withs-aidcontact71. Thecontact 71. has an insulating end 74. secured. thereto, said! end. being disposed in the-pathof, the teeth of" thee-ode Wheel 70., to be movedthereby so as; to bring the said contact 71 into engagement with the. contacts 72. and. 73; said; contact 71 being so adjusted asto constantly tend to move away fromsaid contacts 72 and 73.

The code wheel70is secured to. the shaft 46in such relationto the guide disc 65 carried thereby that the tooth 75 will. be positioned tohold the contact 71 in engagement with the contacts72 and 73. Whenever the notch 69 in said disc 65 is positioned to receive the projection 64..

The outline of. the wheel 70 is arranged to provide. teeth for the formulation of a code signal characteristic-0f some signal station location, beingv shown as arranged for the formulation of. the-code signal i.

It. .isevident." that. the formulationof the code signal representedgby the outline of the code wvheel 70 iscontrolled by. the starting and stopping mechanism. already described, and that: such formulation will; be accomplished a. greater. orv lesser number of. times-:asdetermined. by the action of the said starting and stopping, mechanism when the-notch 69- is-presented to the projection 64. after each formulating cycleof the train..-

The, electromagnet. 68 and the aiinature 67 co-operating therewith constitute translating means for applying the energy-of. a, suitable current source to the actuation of the? starting, and stopping mechanism;- said armature beingsecured to, the lever 60, and said magnet being; carried by the; brackets 36 and 37 in such position, with relation to said armature, that" the efiective energize tion of said magnet will, cause. saidarmature to swing the lever 60. soas to carry the projeetion. 64.;out oft-he notch-.69 andfar. suitable distance above the periphery ofthedise65, A.

thereby carrying the projection 62 out of the path of the arm 66 and lifting the projection 63 to a position higher than that which it occupies when the projection 64 rests upon the periphery of the disc 65.

A retractile spring 76 is so applied to the lever ('30 as to tend to swing said lever so as to carry the projection 62 into the path of the arm 66, and to move the armature 67 away from the magnet 68. A. toothed segmental member 77 is fixed upon the shaft 78, and said shaft is so located, with relation to the pin 79 carried by the disc 65, that said pin may engage the teeth of said menu her to impart counter-clockwise movement thereto. A spring 80 is secured to the shaft 78 and imparts a tendency thereto' for clockwise movement.

A holding pawl 81 is secured to the shaft 82 in such relation to the member 77 that the bent over end 83 thereof may engage the teeth of said member to hold same against clockwise movement.

The pawl 81 is so positioned, with relation to the arc of movement of the pin 79, that, when the end 83 is engaged by a tooth of the member 77, the distance from the holding face of said pawl to said are of movement will be somewhat less than the distance between the holding faces of adja cent teeth of said member 77; to the end that said pin 79 may properly engage a tooth thereof when said member is held against clockwise movement by said pawl.

The member 77 is so formed and mounted in such relation to the arc of movement of the pin 79 that each revolution of the disc 65 will cause rotation of said member an angular distance somewhat in excess of that between the holding faces of adjacent teeth of said member.

As most clearly shown by the enlarged view of Fig. 8; full sized teeth of the member 77 have a holding face 84: for engagement by the holding face 85 of the end 83, and a lifting face 86 for engagement by the lifting face 87 of said pawl; and that the junctions of such lifting and holding faces, of both such teeth and said pawl are so formed as to provide the bevels 88 and 89, respectively,. which bevels act as lifting faces to raise said pawl during accumulation-canccliug or restoring movement of the member 77 for a reason which will be hereinafter more fully explained.

The spring 90 (see Fig. is so applied to the pawl 81 as to impart thereto a tendency to so swing as to bring the end 83 into the path of the teeth of the member 77.

The latch 91 is mounted upon the shaft 78 for rotation independently theerof; and the free end of said latch is disposed adjacent to the projection 63 carried by the lever 60. The spring 92 (see Fig. 4) is so applied to the latch 91 as to impart a tendency to swing the end thereof toward the projection 63.

The lug 93 is formed on one edge of the latch arm 91 for cooperation with the projection 9e carried by the pawl 81; and said parts are so relatively positioned that, when the holding face of the end 83 of the pawl 81 is disposed in the path of the holding faces of the teeth of the member 77 (see Fig. 9), the projection 94 will be in the path of the lug 98; and so that when the pawl 81 is raised so that the holding face of the end 83 thereof is out of the path of the holding faces of the full height teeth of the member 77 (see Figs. 6 and 7), the projection 94 will be raised high enough to permit ledge 93 to pass thereunder.

The pawl 81 is so mounted with relation to the lug 93 that the downward movement of the projection 94 along the vertical face of said lug 93 will tend to swing the free end of the latch 91 away from the projection 63.

The pin 95 is carried by the member 77 and is so positioned thereon as to be adapted to engage the latch arm 91, during clockwise movement of said member, to swing said latch away from the projections 63 and and into engagement with the shaft 82. Said pin 95 is so positioned with relation to the teeth of the member 77 that, when said member has turned clockwise on its shaft until its movement is arrested when said pin lzas moved said latch arm into engagement with the shaft 82, the extreme left-hand radial tooth face of said member will be disposed in the path of the pin 79 for effective operation thereby. The pin 95 therefore serves both for limiting the extent of the clockwise movement of the member 77 and as a means for disengaging the lug 93 from the projection 94 when said member is in its fully restored position.

From the foregoing it will be seen that the member 77, the pawl 81 and the latch arm 91 serve as step-by-step mechanism in termittently engaged by the train operated pin 79, during the running of the train, for accumulative actuation therefor.

The latch arm 91 has a heel 96 formed thereon adjacent to the projection 63. Said heel and said projection being so relatively formed and arranged that, when the lever 60 is positioned to bring the armature 67 into engagement with the poles of the mag-- net (58 said projection 63 will be disposed in the path of the heel 96, andwill thereby prevent movement of the latch arm 91 in response to the spring 92 such as would carry the lug 93 into the path of the projection 94; and so that, when the lever 60 is so positioned that the projection 64. rests upon the periphery of the disc 65, the projection 63 will be disposed below the path operation thereby of the heel 96, and will therefore permit h emen f t e atch 91 111 e -j spense to the spring 92 as will carrythe lug 93 into the path of the projection 94:.

From the foregoing it'will be seen that the arrangement of the determining lever with relation to the latch arm 91 is such as to prevent movement of said latch arm to eliect supporting engagement between the lug 98 and the projection 9% only when said lever is positioned to permit starting of the train upon complete attractive movement of the armature 67.

Because of the comparatively slight force pplied y h magnet 68 for the a tuation of the armature 67, it is very desirable to pawl 81 is positioned to retain accumulative movement of the toothed member 77, the

latch arm 91 will be so positioned as toho'ld the heel 96 out of the path of the projection 63 rand so that, when the pawl 81 is raised to its ine'lfective position, said latch arm will be permitted to so move as. to carry the lug 9.3 into the path of the projection 94 In order to prevent accumnlation ca-nceling or restoring movement of the member 77., as a result of deenergization of the magnet 68 during certain accumulative steps of said member, the end of tooth 97 is cut ofi, and no lifiti-ng face is provided between the holding face 98 and the holding face of the tooth adjacent thereto. As a result of this construction, the train may be brought to rest at the conclusion of the accumulative steps incident to the cycles of the operation of said train during which either the tooth 97 or tooth 9.8 is moved past the end 83 .ot the pawl 81, as said teeth 97 and- 98 are. of insufiicient height to raise said pawl enough to permit the latch armto act to retain same in position to permit canceling or restoring movement of the member 77.

The insulating cam 9.9 is fixed upon the shaiit 78 so as to move with themember 77 and the contacts 100, 102, 103' and 110 are mounted in suitable relation to said cam for (see Figs. 10 and 11).

The free end of the contact 110 (best shown in Fig. 10) is disposed in the path of the rise 116 of the cam 99 at such distance from the normal position thereof that rotation of said cam from its normal position, in a counter-clockwise direction, for an anular distance corresponding to that of b l three teeth of the member 7 7 will bring said rise into engagement with said Contact.

Th d pre si n 109 is rm d n h cam 9- in the path of the free end ofthe contact 1.10,, nd id p e o is o Posit o e to be presented to the end of said contact when the cam 99 is rotated from its'l'lprmal position, in a counter-clockwise direction, for an angular distance corresponding to that of six teeth of the member 77. The contact 110 is connected to the contact 113 by the insulating spacer-112; said contacts 110 and 113 being normallyspaced away from thecontacts 111 and 114:, respectively,

and at such distance therefrom that, when that the free end ofsaid contact 102 is,

spaced from the portion ofthe cam 99 normally presentedthereto so as tocpermit the rise 108 to freely pass thereunder. The contact 100 is normally spaced away from, the contact 101 and the free end of said contact 100 rests upon the cam 99 in the path of the rise'108, so that, when said cam 99 is rotated counter-clockwise an angular dis.- tanc o p n ng o that f to r tee h of the member 77, said rise will engage said contact and move same into engagementwith the contact 101.

The free endot the contact 102 is disposed in the path of the rise.115 ofthe cam 99, and said free end is so positioned as to he engagedby said rise, to move said contact 102 away from the contact 101, when the cam 99is rotated fromits normal position in a counter-clockwise direction for an an.- gular distance corresponding to that of siX teeth of the member 77. I The free end of the contact 103 is disposed in the path of the rise 115 of the cam 99 at such distance from the normal position of said rise as to be engaged thereby,

upon rotation of said cam 99-from its nor mal position, in'counter-clockwise direction, for an angular 7 distance corresponding to that of two of the teeth of the member 77 Said contact 108 normally rests against the. contact 104: and carries a spacer 106 for moving the contact 10,5, The contact is normally spaced away from the contact 107 but may be moved into engagement therewith by the spacer106; said parts being so relatively arranged that, when the free end of the contact 103 is moved away from the cam 99 by the rise thereof, said contact'will be moved away from the contact 10 1, and will carry the spacer 106 to such position as to bring the contact 105 vinto engagement with the contact 107.

A typical arrangement of electrical connections is diagrammatically illustrated by Figs. 10 and 11. In Fig. 10,-the conductors 140 and 141 represent line wires of asuitable signaling circuit; said conductor 140 being connected directly to the contact 72 and being connected through the conductor 143 with the contact and said 0011- ductor 141 being connected through the con ductor 144 with the contact 121, and being connected through the conductor 145 with the contact 73.

The contact 117 has an insulating end 118 secured to the free end thereof for en gaging the code signal formulating sector 146, the contact 119 being mounted below the contact 117 and the contacts 120 and 121 being mounted above said contact 117; and said parts being arranged for cooperation in a manner and for a purpose which will be hereinafter more fully explained.

The contact 120 is connected through the conductor 147 with the contact 111. The contact 117 is connected through conductors 148 and 149 with contact 71, said contact 117 being also connected through said conductor 148 and through conductor 1.50 with contact 113. Contact 119 is connected through conductor 151 with contact 114; and said contact 114 has a ground connection G applied thereto.

From the foregoing it will be seen that, under normal conditions, a current path is maintained, through the contacts as shown, between line conductor 140 and line conductor 141,-the ground connection (at being disconnected therefrom. The current path between conductors 140 and 141 is normally maintained through contacts 72, 71 and 73 and conductor 145. The current path from the ground G is normally interrupted between contacts 114 and 113, and between contacts 119 and 117.

In Fig. 11, the battery 122 represents a local current source for the energization of the magnet 68, and the signaling keys 123 and 124 are intended as diagrammatic representations of circuit closing means for independent current paths from said source to said magnet; and it should be understood that such circuit closing means may be operable either manually or electromagnetically in response to circuits connecting any desired thermostatic or other devices, as service conditions may render most expedient. One terminal of the battery 122 is connected through conductors 125 and 126 with one member of the keys 123 and 124. The other member of key 123 is connected through conductors 127 and 128 to contact 104 and through conductors 127 and 129 to contact 101. The other member of key 124 is connected through conductors 130 and 131 with contacts 103 and 105. The conductor 132 connects conductor 125 with contact 107, and

the conductor 133 connects said conductor 132 with the contact 100.

The other terminal of the battery 122 is connected through conductors 134 and 135 with one end of the winding of electromagnet 68, the other terminal of said winding is connected through the conductor 136 with cont-act 102.

The local alarm bell 1.37 is provided for a purpose which will be hereinafter more fully explained; one terminal of said bell being connected through the conductor 138 to conductor 134, and the other terminal of said bell. being connected through the conductor 139 to the conductor 131.

From the foregoing it will be seen that the controlling means of which the insulating cam and cooperating contacts, shown in Fig. 11 forms part, is arranged to so govern the function of the starting and stopping mechanism responsive to the magnet 68 that, after predetermined action of the train, said mechanism will act to stop the running thereof, regardless of the actuation of the keys controlling the force of the battery 122. For example; when the rotation of the cam 99 for an angular distance corresponding with that of two teeth of the member 77, brings the rise 115 into engagement with the free end of the contact 103, as hereinbefore more fully explained, the movement of said contact away from the contact 104, incident to such engagement will render the electromagnet 68 unresponsive to such actuation of the key 124 as is intended to apply the force of the battery 122 thereto through the current path controlled by said key. F or further example; when the rotation of the cam 99, for an angular distance corresponding with that of six teeth of the member 7 7, brings the rise 115 into engagement with the free end of the contact 102, as hereinbefore more fully explained, the movement of said contact away from the contact 101 will render the electromagnet 68 unresponsive to the actuation of the keys 123 and 124.

It will further be seen that the magnet 68 is normally deenergized, that the alarm bell 137 is normally silent, and that there is no current flow from the battery 122 other than when one of the abnormal current paths are established as, by the closure of the contacts of the signal keys 123 and 124, or while contacts 100 and 102 both engage contact 101.

The sector 146 is secured to the shaft 46 in such position, with relation to the code wheel 70, that the portions of said sector which are of greatest radius will be presented to the end 118 of the contact 117 when said code wheel is so positioned with relation to the end 74 of the contact 71 that none of the teeth of said code wheel wi'il engagewith said end. Said sector is :t-urther so positioned upon said shaft with relation to the notch 69 formed inthe disc 65 that said sector will support the contact 117 intermediate the contacts 119 and 120 whenever said notch is positioned to receive the projection 64, and so that when said disc 65 is rotated clockwise from the normal posi tion thereof so as to withdraw the notch 69 from the path of the projection 641, said sector willbe withdrawn from the path of the is arranged for engagement with "the free end of con-tact 105 as best "shown in Fig, 11. A portion of the shaft 56 iscut away, as indicated by Fig. 5,, so that, when the main spring 38 isfully wound, such cutaway portion will be presented to the tree end of the extension 154 and thus permit the lever 152 to swing upwardly in response to the pres.- sure of contact 105 against theins-ulating pin 155; and so that the rotation of the shaft 56incident to the unwinding of said main spring 'to a predetermined point will sufficiently withdraw such cutaway portion from the free end of the extension 154 as to cause said extension to so swing the lever l'5'2-asyto cause the pin 155 to move the contact 105 into engagement with the contact 107. a

Manually operable means is provided for withdrawing the paw-1' 81 from the path of the teeth of the member 77 said means comprising the pull rod "156 which is supported in-the guides 157 and 1-58, the upper end oi: said rod being bent over and coiled around said rod below the guide 157 so as to form an abutment 159G101 one end of the spring 160. The compression spring 160 is. coiled around "the rod 156, between the abutment 159 and the guide 158. The handle 16-1 is hinged to the "lower end er the pull rod 156, and the extension spring 162 connects the upper end of said pull rod with the pawl 81. The various parts of said manually operable means are so constructed 2 r and arranged that, under normal conditions,

the spring 160 will support the rod 156 in its fully elevated position, thereby fully releasing the tension of the spring 162; and

so that, when the member 7 7 is being held against clockwise rotation by the engagement of the end of the pawl 81 therewith,

, if the handle 161 is moved downwardly, the

spring 162 will be extended until the tension thereof is su-flicient to overcome the frictional load between the end 83 of; pawl 81 and the tooth of the member 77 in engagement therewith, besides overcoming the'tension otthe spring 90; acting to hold said pawl in engagement with said The operation of. the signaling device shown by Figs. 1 to 11 inclusive, is as "foi lows: I

Assuming that the main spring 88 is fully wound, the magnet 68 is-deenergized, the

projection 62 is disposed in the, pathoi' the arm '66, the member 77 is in its fully restored condition, and electricalconnect ons are provided as shown in Figs. 10. and 11 (the various parts being disposed as shown in Figs.

1, 2, 3, 4c, 5, 10 and 11) shouldthe contacts of key 124- be closed for comparatively short period, the 'alarmbell 137 will sound while said contacts are closed, and the train will act for one operative cycle =tl-iereof, and the various parts of said train will thereupon be restored to, their respective normal positions. Such sounding o'i'th'e alarm bell 187 in response to such clcsure of the contacts of key 12 1 results from the establishmentof-a current path as follows: from one terminal of battery 122, through conductors =125'and 126 toone contact-oi said key 12%, from the other contact of said key, through conductors 180 and 139 to one terminaloi the alarm bell 137; from one terminal "of said alarm bell through conductors 1'38 and 134 to the other terminal of battery 122.

The starting of thesignaling train inresponse to the closure of the contacts of the 'key 12 1-as just described, resulted from current flow through the following paths;- from one terminalo'f battery 122, through conductors 125 and 120 to one contact of key 121 from the other contact of said key,

through conductors 130 and 131 to contact 10-3, theneethrough contact 10 1 and conductors 1'28 and 129% contact 101; thence through contact 102 and conductor 1% to one end-of the winding of elect-rOmagnetG-S, thence through said winding and through conductors 185 and 13st to the other termi nal of said battery 122. 7

Upon ene-rgization of magnet 68, as just described, the armature 6? (see Fig. 5) is at tracte'd thereby, swinging the determining lever 00 .so as to withdraw the projection 62 from the path 01 the arm 66 thereby permitting the signaling train tostart. When the signaling train is thus started, the notch 69 is quickly moved out of the path oiithe projection 6-1, whereupon the disc (35 provides a support for the projection 64, where by the lever (34) will be held against such movement as would carry the projection 62 into the path of the arm 66; thus assuring continued operation of the train until the completion of one operative cycle thereof, even though the magnet (33 becomes deenergin-ed after a comparatively brief period, due to the separation of the contacts ofthe key 124:.

When the notch (39 has been moved out of the path of the projection 6-1, as just described, and the sector l-iti on the shaft carrying discs (15 has been withdrawn from the path of the end 118, the contact 117 will move into engagement with. the contact 119, thus establishing a connection between the ground 1- and the line conductors 140 and 1 11; said connection being established through the conductor 151, the contacts 119 and 117, and the conductors 1&8 and 149, to the contact 71 which forms a part of the current path between said conductors 1&0 and 1 1-1.

After the ground G- has been connected with the line conductors 110 and M11, as just described, the further rotation of the code wheel 70 for an angular distance corresponding to that throughout which other teeth of said wheel serve to hold the contact 71, by means of insulating member 74, against the contacts and 73, will withdraw the tooth 70 from the path of the contact 71, and said contact will thereupon move away from the contacts 72 and 73, thus interrupting the current path between conductors 140 and 1 11 and disconnecting the ground G from both of said conductors. During still further rotation of the code wheel 70, the other teeth thereof will successively engage and disengage the end 7;, and thereby alternately move the contact 71 into engagement with the contacts 72 and 73, and then permit said contact 71 to move away therefrom, so as to complete the formulation of the code signal for which the outline of said code wheel is arranged. It is evident that each time the contact 71 is thus brought into engagement with the contacts 72 and 73 acurrent path will be established between the conductors 1-10 and 1&1, and the ground G will be connected thereto; and that each time said contacts are separated said path and said connection will be interrupted.

After the last one of the teeth of the code wheel 70 has disengaged the end 74;, as just described, the sector 146 will engage the end 118 and thereby move the contact 117 away from the contact 119 and into engagement with the contacts 120 and 121. Such movement of said contact 17 will not, however, establish acurrent path between the conductors 1%) and 141 nor connect the ground thereto because the current path from the contact 120 through the conductor 1%? is open at the contact 111, and the current path from the contact 117 through the conductor 1 18 is broken at the contact 71 and at the contact 113.

During the further running of the train, after both of the higher raised surfaces of the sector 1 16 have disengaged the end 118, said end will rest upon the intermediate surface of said sector thereby holding the contact 117 away from the contact 119, while permitting said contact 117 to move away from the contacts 120 and 121; and the pin 7 9 will be carried by the disc 65 into engagement with a tooth of the member 77 and will thereby swing said member in a counterclockwise direction an angular distance somewhat in excess of that between the holding faces of adjacent teeth thereof. Such movement of the member 77 vill act, through the shaft 78, to correspondingly move the cam 99, (see Fig. 2) but such movement of said cam will be insufhcient to cause any of the rises formed thereon to engage contacts which are arranged for cooperation therewith.

The movement of the member 77, as just described, will withdraw the pin from engagement with the latch arm 91, and will, at the same time raise the end83 of the pawl 81. so as to carry the projection 94 above the path of the lug 93. Inasmuch as the deenergization of the magnet 68 had previously permitted the projection 64: to move into engagement with the disc 65, the projection 63 will now be disposed below the path of the heel 96, and the arm 91 will therefore be permitted to move in response to the spring 92 so as to carry the lug 93 into the path of the projection 9 1, as shown in Fig. 7, thus preventing the pawl 81 from swinging in response to the spring 90 so as to move the holding face of the end 83 of said pawl into the path of the holding faces of the teeth of the member 77. Thereafter, and just prior to the point in the running of said train when the notch 69 is again presented to the projection 64, the pin 79 will be moved out of the path of the teeth of the member and thereupon said member will be moved clockwise by the spring 80 to the position shown in Fig. 5.

After the controlling mechanism parts have been permitted to return to their re spective normal positions, as just described, the tooth 75 of the code wheel 70 will engage the end 74 and thereby move the contact 71 against the contacts 72 and 73, thus reestablishing a current path between the conductors 1 10 and 141, but without connecting the ground G therewith, because the ground connection previously effective is now broken between the contacts 119 and 117.

After the contacts have been restored to their normal condition, as just described, the

loo

i v toitsn'orinal position.

notch69 Will he presented to *the projection 64, and the determining *leverhO Will there upon move in response to 'the spring 76, so as to carry theprojection' 62 into the pathof the arm 66, and thus bring the signaling train again'to r'es't. i v

Shoi'ild 'the contacts *of key 124: he closed foran extended period, insteadef for period of comparatively short duration, as iist described, the train "Will act 'for two operative cycles thereof, and will "001116 to rest with theeOll'tiolling mechanism thereof so conditioned as-to render the magnet te "U11- responsive to closure of the key 12 1, the 'ala'i'in hell 1-37 beingtaused to ri-ngrontinii- 'ously'until the nien'iher 77 has been restored When running in response to a continued closureof the contacts of the key 124:, such as just described, the

functioning of thevarious parts is the "same as t-he*response' already descrihedto a elosure of Stud contacts which is o'f'coinparatively short duration, -except for the fact that the lever-6O 'Will beheld'in its fully elevated position because of the continued "attr action of the armature 67 by the magnet 68 until "after the pin 7 9 has'i'noved the ineinher'77. Owing to the fact that the lever-60 is ii'iainta'in'ed in its fully elevated position, the projection-"63 carried thereby Willbe disposed in the path of the heel 96 of the latcliiaiin i 91, when the pawl 81 is'elevatedty a tooth'ofthe member 7 7 so as to carrythe'projection0e'ahove the path ofthe'iug "93,"a's shown inFi'gffi.

' proj ection63," the holding face 83 "of the end of the pawl 81Will move "into the path of theholding facefd f' the tooth "or the-member :77 which {had just previously raised "said pawl, and the operating cycle e1? thesignah ing -'Inec'hanisin will thereupon be repeated; and, incidentally thereto, the rise 11 5 of the cam 99 Will move the contact 103 -avvayfrom the contact 10 1, and such HIOVQiHEDt Wilhhe transmitted through the spacer 106 to move the contact 105 into engagement "with the eontact i07. I

At the conclusion ofthe second operatin'g cycle, *under the conditions just described, the train will he brought-"to rest when the match 69'-is presentedto-the projection 64?; and the accumulative movement of the iiiein her '77 "Will he retained, inasmuch es the tooth 97 of said nieinber will irotraisethe pawl '81 high enough to permit thefhig "93 to --move into the path of the proj ection 9 1. I

The -'i'no'veinent of the Contact 103 ay from the contact104, as just descrih-ethWvill-inter+ ruptthehurrentpath-through 'the 'niagnet "68 which Was established by the 'cl osure' of the fc ontae-ts'of the hey 124,"thus causing deenerg'iz'ation of s aid magnet and permitting the lever 60 to movein response to the spring 7 6 so its e0 bring-the train to rest.

*When the tr ain has heen hroirghtto rest,

established by closing the contacts of 'o'ne te'rmiiia'l at the battery 122 through-"conductors 125 and 132 to cont-act -1'O7,-="then'ce through-contact 105 and conductors 131*and 139 to one terminal of the bell 137 antl'froin the other terminal of 'said he'll through eondiictors 138 iiiid=13i to the other -te'rni'nial of the battery "122. The bell 187 will thus be caused to soundthroughoutthe time that the train'stands at rest after-two operative cycles thereof under {1116"0011Cl'lhl0115 just described.

It the contacts of'key123 ar'e clc-sed when the trainis'at rest with theqnenibenW, and

(33.11199 inthQPOSltiOllttSSllHiGdthereby after two *aceu'mulative "steps tliereof, as just desllbeiitl'le magnet 68 will "be energized --a-iid the train Will operate "for -a greater or less number of *the operative cycles thereof, de

pendent upon the duration of the closure-of the *contacts of said key, "as herein'h'e tore v more fully described. Shouhlt he closure o't the contacts of such key continue "for'a period of suchb'rief duration that the net 68 will hedeenertgized iduring the first I operative cycle of said train in response thereto, the member 77, and parts moving therewith 'Will be restored to nOr-malpesition, as 'hereinhefore more 1 fully described. Shouldthe contacts'of'the key 1 24: he clesed at theitiine such parts aie so restoredto their normal position, the running *of the *tr'ai-n will continue fortwo "additional operative cycles thereof, and the train ii'rill there-upon be brought to rest ,es'hereinbei'ere more rully described. 7 When the signaling device '18 in "nOPn'iitl condition, as hereinhefore =inoi'e fully described, should the contacts "of key 1523 he closed -"-fo'r a comparatively brief period, the

'resultwill be the seine esthat'ensuiiig "from a closure o'f the co'n'tects of'the key li' ii r a corresponding dlllf'fltiOll; "the current the magnet 68, as" hereiiibefore described.

Should the contacts filmy 123 he closed for an *exten-dedperiod, instead of tor a period of comparatively brief d i'iration, as

justdescribed, thetraiii-Will -aetfor"six ope-rative cycles thereo'hand W1llC6me-"E016 St with 1 the controlling 1 mechanism thereof so conditioned as to render the magnet 68 unresponsive to closures of eitl'ier the key 1 23 or key 124;thealarm-M11137heirig caused ice "1 23 beingtrom One'tei'minaleithehaitery Lil to sound continuously until the member 41 has been manually restored to its normal position.

fhe operation of the train in response to a maintained closure of the. contacts of the key 123, such as just described, during the first operative cycle thereof, will be the same as that previously described as occurring in response to a closure of the contacts of said key of comparatively short duration, except as to the determining lever 60 and the controlling mechanism. Owing to the continued closure of the contacts of said key 123, the lever 60 will be maintained in its fully elevated position, and the projection 68 car ried thereby will be disposed in the path of the heel 96 of the latch arm 91 when the pawl 81 is so lifted by a tooth of the member 77 to carry the projection 94 above the path of the lug 93 (see Fig. 6). Said projection 63 will therefore prevent such movement of the latch arm 91 as would carry the lug into the path of the projection 94, and as soon as the holding face of the tooth which had so raised the pawl 81 passes to the left of the holding face of the end 83 of said pawl, the spring will cause said pawl to so move as to bring said end 83 into the path of the teeth of the member 7 7 and thus cause the projection 94 to so engage the vertical face of the lug 93 to swing the latch arm 91 out of engagement with the projection 63, as shown in Fig. 9. v

After one accumulative step of the controlling mechanism has been taken and retained, as just described, the subsequei'it running of the train will cause the notch 69 to be again presented to the projection 64, as was the case when the train was acting in response to a key closure of compiaratively short duration, as previously described. Owing to the fact that the continued closure of the contacts of key 123 will now cause the magnet 68 to retain the armature 67 in fully attracted position, the running of the train will be continued for another operative cycle thereofcorresponding with the cycle hereinbefore more fully described, eircept as to the functioning of the controlling mechanism and of the contacts operable thereby. It is evident that during such cond operative cycle the pin 79 will engage the second tooth from the lefthand end) of the member 77, and that the lifting face of the tooth 97 will not raise the pawl 81 high enough to carry the projection 94 out of the path of the lug 93; hence the accumulative step thus imparted to the member 77 will be retained regardless of whether the magnet 68 is energized when the tooth 97 is moved past the end 83 of the pawl 81. During such second accumulative step of the member 77, the rise of the cam 99 will be brought into engagement with the contact 103, and will move said contact away from contact 104. The movement of the contact 103 by the rise 115, as just described, will be transmitted through the spacer 106 to the contact 105, to move same into engagement with the contact 107.

After the second accumulative step of the controlling mechanism has been taken and retained, as just described, the ensuing operation of the train will cause the notch 69 to be again presented to the projection 64. Owing to the continued closure of the contacts of the key 123, the magnet 68 will remain energized, the armature 67 will be retained in its fully attracted position, and the running of the train will continue for another operative cycle thereof. During such third operative cycle, the pin 79 will engage the third tooth (from the lefthand end) of the member 77, and the lift ing face of a tooth thereof will raise the pawl 81 high enough to carry the projection 94 out of the path of the lug 93; hence the retention of the accumulative step thus imparted to the member 77 is dependent upon the continuity of the energization of the magnet 68 throughout the period during which said pawl is so raised. During such third accumulative step of the member 77 the rise 116 will be brought into engagement with the contact 110, and will move said contact into engagement with the contact 111; such movement of said contact being likewise imparted, through the spacer 112, so as to move the contact 118 into engagement with the contact 114. After the third accumulative step of the controlling mechanism has been taken and retained, as just described, the notch 69 will be again presented to the projection 64, and the continued closure of the cont-acts of the key 123 will continue the energization of the magnet 68 and thereby retain the armature 67 in fully attracted position, thus permitting the train to run for a fourth operative cycle thereof. During such fourth cycle, after the last one of the teeth of the code Wheel 70 has disengaged the end 74 of the contact 71; the movement of the contact 117 in response to the engagement of the end 118 thereof by the sector will establish a current path between the conductors 140 and 141, and will connect the ground G thereto, because of the actuation of the contacts 110 and 113 during the third accumulative step of the cam 99. The current path so established extends from the conductor 140, through the conductor 143 to contact 110 thence through contact 111 and conductor 147 to contact 120, thence through contacts 117 and 121 and through conductor 144 to line conductor 141. The ground connection with said current path is established from the ground G through contacts 113 and 114, and through conducill) i of the winding tors 150 andv 1 18' to contact. 117;. which contact forms part of the current. path just described between line conductors 1 10 and. 1411.

From the foregoing it willbe seen that. a different signal will be formulated during the fourth and following operative cycles of thesignaling train than. that formulated during the first three cycles thereof',.in that both the code wheel and the sector 14:6 will be effective successively and in alternation, so as: to formulate the: code signal which consists of the code signal with the sufiix After the" complete"formulation of said code signal, the rise 108 of. the cam- 99 will. be moved, incident to the. fourth accumulative step of. the member" 77, so as to bring the; contact into engagement with. the! contact 101; a currentv path will thereupon be established, between the battery' 1:22; and the magnet 68, from one ter- -al of said battery, through conductors 125i, 132 and 133 to contact 100, thence through contacts 101 and 102 and conductor136r to one endof the winding of the el'ectromagnet 68, and from the other end of said magnet, through conductors: 135- and 1 34- to the other terminah of said battery. llt is evident that the establishment of said current path will assure running of. the signal train for further operative cycles thereof regardless of the continued closure of the contacts of the key 123.

During the ensuing operative cycles of said signaling train, both the code wheel 70 and the sector 1 16 will act effectively in the formulation of" their code signaling. impulses and the various parts of said train and the accumulation mechanism actuatedthereby will function in a manner similar to that hereinbefore describedi.

During the. sixth accumulative step of the member 77 the rise 115' ofv the cam 99 will be brought into: engagement with the contact102 and will thereby move said contact away from the contact 1101; thus assuring deenergization of the electromagnet 68*. linasmuch as the tooth 98 of said member 77, which engages the pawl 81 during. the sixth accumulative step of said member,v does not so raise said pawl as to carry the projection 94 above the lug 93; it is evident that-such deener'gizatio'n of the magnet 68 will not resiilt in a cancellation: or restoration. of the accumulative movement of said member, but that the signaling train will be brought to rest at the conclusion of the sixth operative cycle thereof.

Had he contacts of the key 123-beenv open during the first or third accumulative steps of the member 77, it is evident that the pawl 81 wouldhave become latched in its elevated position, as indicated by Fig. 7, and would thereupon have permitted. cancellation of fective position during the passage tl1er.e-

under of. a full height tooth of the member 77; with: the: possible addition of the time required for the restoration of said member to its: normal. position in the event of. said pawl being retained. in its elevated: or inst fective position when the. pin 79 isiout of the pathof the teeth of the member 77 and said memberis not in its fully restored position.

If the operation of. the train is continued orv repeated without the. rewind-ing of the main sprmg 38', untll said spring? is unwound sufficiently to withdraw the cutaway portion of the shaft 56',- from the path of the extension 154: carried by the lever 152, said lever will be so: moved by said; shaft as to causethe insulating pin1 55 to: hold thecontact in engagement withthe contact107.

When the mainspring has run down to a degree such as will result 111- the pm 155 holding the contact 105 in. engagement with the co-ntact 107, as just described, if. the pawl 811s dlsengaged from the member 77, and

said member is thereupon restored to its normal position, it isevident thatthe magnet 68 will be energized, andthat the train will. run forwtwouoperative cycles thereof, thus causing the formulation'i of the code signal. for which the wheel 70 is arranged, without the suffix which may be formulated by the sector 146,.and that said train will thereupon come to rest. .The current path through which said magnet will be energized' under the conditions just described is as follows,- from one terminal of the battery 122, through conductors 125 and 132to' coir tact 107,. thence through contacts -51,. 103 and 104C and conductors 1.28% and- 129 to contact 101, thence through contact 102 and conductor 1:36 to one end of the winding of the magnet 68-, and from the other end of said winding, through conductors 135. and 134: to the other terminal of said battery 122.

The signaling device shown. by 12, comprises a. suitable signaling train, suclr as that shown in. Fig.. 5,.ha's a startinga-ndstopping mechanism, a determining; lever 60 pivoted at 6'1 and having projections 62, 63

and 64:; and a detent arm 66 carried by the pallet shaft 53. The guide disc hasthe notch 69 formed. therein and is arranged to co-operate with the projection 64. in amanner corresponding to that hereinbefore described in connection with Fig. 5.,

Code signal foimulating mecha ism is 

